i dont think the OP would go through all this sh-t for a made up story, i totally believe him! think about this, if you were driving the m5, and some guy in a 335 was playing with you, wouldn't you wanna show him what you got? and just pull away from him so his jaw would drop and eye brows would raise!?!
the answer is yes, you would be in p500 mode and pedal to the ground, you wouldnt race someone with 70% throttle...
and its funny how all those guys not believing drive 325s or 330s.
a little envious guys?